July 25, 2025

The bark of shagbark hickory (Cayra ovata) separates into long trips as the tree ages, which eventually loosen from the trunk.

Residents who want to learn about the region’s native trees and shrubs can take the Raisin Region Conservation Authority’s (RRCA) self-guided arboretum tour at Gray’s Creek Conservation Area. 

“Gray’s Creek is home to a variety of native tree and shrub species, each that have their own story to tell, including their characteristics, growing preferences, and historic uses,” says Claudia Munafo, RRCA’s Public Information Coordinator. “From shagbark hickory with its unique bark that separate into long strips as the tree matures, to the tropical looking paw paw whose fruits taste like a mixture between a banana and a mango.”

Visitors can drop by the RRCA office at Gray’s Creek to pick up an arboretum map or download one at rrca.on.ca/Trees prior to starting the tour, which begins at the one millionth tree the RRCA had planted since 1994, and ends at the Gray’s Creek edible forest. Trees featured in the are marked with a sign that provides the tree’s scientific name, its common name in French, English, and Mohawk, and key features.

“Those who want to dig deeper can also scan a QR code found on each of the signs which lead to a webpage containing more information about each species including its etymology, distribution, care and growing preferences, historical uses, and more. There are also photos, videos and even links to additional resources,” says Munafo. “The arboretum is also very helpful for landowners who are looking to plant trees on their property, where they can see mature specimens to help with species selection.”

The RRCA works with public and private landowners to plant trees within its watershed jurisdiction to strengthen the region’s tree cover, which can help mitigate flooding and erosion, capture carbon, provide wildlife habitat, and contribute to the overall health of the watershed. The RRCA is currently booking free site visits for landowners looking to plant 500 or more trees through the conservation authority’s full-service tree planting program. For smaller projects, the RRCA offers a popular over-the-counter seedling sale and hosts yearly free tree giveaways. 

The RRCA is grateful for the support from the TD Friends of the Environment Foundation for the Gray’s Creek Arboretum. For more information, visit rrca.on.ca/Trees or contact (613) 938-3611 or info@rrca.on.ca.